diff --git a/doc/source/admin/configuration/hypervisor-xen-api.rst b/doc/source/admin/configuration/hypervisor-xen-api.rst
index 082a37bcbcbe..d18a7b705d64 100644
--- a/doc/source/admin/configuration/hypervisor-xen-api.rst
+++ b/doc/source/admin/configuration/hypervisor-xen-api.rst
@@ -4,6 +4,14 @@
 XenServer (and other XAPI based Xen variants)
 =============================================
 
+.. deprecated:: 20.0.0
+
+   The xenapi driver is deprecated and may be removed in a future release.
+   The driver is not tested by the OpenStack project nor does it have clear
+   maintainer(s) and thus its quality can not be ensured. If you are using
+   the driver in production please let us know in freenode IRC and/or the
+   openstack-discuss mailing list.
+
 .. todo::
 
   os-xenapi version is 0.3.1 currently.
diff --git a/nova/conf/xenserver.py b/nova/conf/xenserver.py
index 00dc6eca411d..56e7e93b9cef 100644
--- a/nova/conf/xenserver.py
+++ b/nova/conf/xenserver.py
@@ -21,6 +21,12 @@ from oslo_utils import units
 xenserver_group = cfg.OptGroup('xenserver',
                                title='Xenserver Options',
                                help="""
+.. warning:: The xenapi driver is deprecated and may be removed in a future
+             release. The driver is not tested by the OpenStack project nor
+             does it have clear maintainer(s) and thus its quality can not be
+             ensured. If you are using the driver in production please let us
+             know in freenode IRC and/or the openstack-discuss mailing list.
+
 XenServer options are used when the compute_driver is set to use
 XenServer (compute_driver=xenapi.XenAPIDriver).
 
diff --git a/nova/virt/xenapi/driver.py b/nova/virt/xenapi/driver.py
index 6be6671a7dc1..ef3eb810f535 100644
--- a/nova/virt/xenapi/driver.py
+++ b/nova/virt/xenapi/driver.py
@@ -112,11 +112,12 @@ class XenAPIDriver(driver.ComputeDriver):
         return self._host_state
 
     def init_host(self, host):
-        # TODO(mriedem): Consider deprecating the driver if there is still no
-        # working 3rd party CI by the end of the Train release.
-        LOG.warning('The xenapi driver is not tested by the OpenStack '
-                    'project and thus its quality can not be ensured. The '
-                    'driver may be deprecated in the future.')
+        LOG.warning('The xenapi driver is deprecated and may be removed in a '
+                    'future release. The driver is not tested by the '
+                    'OpenStack project nor does it have clear maintainer(s) '
+                    'and thus its quality can not be ensured. If you are '
+                    'using the driver in production please let us know in '
+                    'freenode IRC and/or the openstack-discuss mailing list.')
 
         if CONF.xenserver.independent_compute:
             # Check various options are in the correct state:
diff --git a/releasenotes/notes/deprecate-xen-driver-train-bd57a16fa51ab679.yaml b/releasenotes/notes/deprecate-xen-driver-train-bd57a16fa51ab679.yaml
new file mode 100644
index 000000000000..b5a5681e4c73
--- /dev/null
+++ b/releasenotes/notes/deprecate-xen-driver-train-bd57a16fa51ab679.yaml
@@ -0,0 +1,8 @@
+---
+deprecations:
+  - |
+    The xenapi driver is deprecated and may be removed in a future release.
+    The driver is not tested by the OpenStack project nor does it have clear
+    maintainer(s) and thus its quality can not be ensured. If you are using
+    the driver in production please let us know in freenode IRC and/or the
+    openstack-discuss mailing list.